Adjustable ventilator screen



g- 5, 1952 D. J. RUST ETAL 2,605,831

ADJUSTABLE VENTILATOR SCREEN Original Filed March 25, 1949 2 SHEETSSHEET1 mvzm'rons .DauLd J. Rust Ja ck J-LJensen ATTOR NEYS g- 5, 1952 D. J.RUST ET AL ADJUSTABLE VENTILATOR SCREEN Origina l Filed March 25, 1949ZSHEETS-SHEET 2 mvsn'rons .DavidJRuSZ Jack JLJnsen MiTv-MZL ATTORNEYSPatented Aug. 5, 1952 ADJUSTABLE VENTILATOR SCREEISF David Jordan Rustand Jack H. Jensen, San Leandro, .Calif., assignors to Ry-Lock Company,Ltd., San' Leandro, Calif., a corporation of California Originalapplication March 25, 1949, Serial No. 83,388. Divided and thisapplication May 7,

1951, Serial No. 224,956

2 Claims. ((11. 160-375) This invention is directed to ,a portable,initially separate, manually installed, ventilator screen adapted foruse in an otherwise unscreened window to cover a partial opening thereofthe present application being a division of copending application,Serial No. 83,388, filed March 25, 1949, now Patent No. 2,564,011.

A major object of. this invention is to provide a ventilator screen, forthe purpose described, which is readily adjustable in length forengagevide a ventilator screen, as above, which embodies a novel guidearrangement between the main screen structure and the slides, so thatthe latter may be readily slid in or out as necessary to lit the deviceto a window frame.

Another important object of the invention is .10 ment in window framesof different widths; the

to provide a ventilator screen which, when in place in' a window frame,permits of adequate ventilation through a partial opening of the window,yet allows the adjacent window sash to be opened or closed at wi1l,;andwithoutmanipulation or removal of said screen; the latter forming aneffective fiy'and insect proof closure with the Window frame andadjacent partially open window sash.

It is also an object of the invention to provide a ventilator screenwhich'is of a simple design which is easy and economical to manufacture,but nevertheless is of durable, weather resistant metallic construction,so that the device can remain in place in a window frame from season toseason. V g

I Still another object of the invention is to provide apractical andreliable adjustable ventilator screen, and one which will be exceedinglyeffective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claims.

In the drawings:

Fi 1 is an inside elevation, foreshortened, of the adjustable ventilatorscreen.

Fig. 2 is an outside elevation, foreshortened, of said screen.

' Fig. 3 is anenlarged cross section on line 3-3 of Fig. 1.

Fig. i is an enlarged fragmentary sectional plan view on line 4-4 ofFig. 1.

Referring now more particularly to the characters of reference on thedrawings, the novel, adjustable ventilator screen comprises a mainscreen structure or border frame, indicated generally at I; such borderframe including a hori zontal top rail 2 and a horizontal bottom rail 3spaced apart vertically a substantial distance.

The top rail 2 and bottom rail 3 are connected, at opposite ends, byflat end posts 4 disposed on the inside. and afiixed to said rails byflush connections, such as spot-welding 5; the upper ends of such posts4 being out-turned over the upper edge of the top rail 2, as at 6, forthe reason hereinafter described.

The main screen structure or border frame I comprised of the rails land3, and posts 6, is fitted with a screen section 1, which section issecured in place as follows:

The top rail 2 is formed along its lower edge'portion, and the bottom 3is formed along-its upper edge portion, with U-shaped channels,indicated at 8 and 9 respectively; the channel 8 opening upwardly andthe channel 9 opening downwardly. The screen section 1 is folded alongits upper and lower longitudinal edgeportions, as at I II,

and as so folded is clamped in the corresponding channels 8 and 9; thescreen turnin out of the channels and lying flush against the back orinner sides thereof. The channels 8' and 9 are offset forwardly, asshown, a distance such that the screen section 1 and the back or innersides of the rails 2 and 3 are in substantially the same vertical plane.

The main screen structure or border fram I- is fitted, at opposite endsand on the outside, with upstanding, relatively wide slides ll suchslides being mainly flat but vertically ribbed, as at l2, for strength.a At the top and bottom the slides H are each formed with inwardlyofiset transverse tongues l 3 which ride the outer face of the rails 2and 3 above and below the channels 8 and 9, respectively. The tongues I3also engage in slidable relation in upper and lower longitudinalchanlaterally outermost edge, with an out-turned flange [8 which extendsverticallyfull distance between the channels 8 and 9, covering theendsof the latter.

With the arrangement of the cooperating inturned flange l and out-turnedflange 18, each slide II is limited in the extent to which it can belaterally outwardly projected; this for the reason that the flange itwill abut the flange I8, preventing separation of the parts.

Also, by reason of the fact that each inturned flange 16 extends toapoint close to the screen section 1, entry of flies or other insectsthrough the space I! is prevented.

At their laterally outermost edges the slides H are each formed withforwardly ofiset shoulders 19, which shoulders have locator. lips "23projecting laterally outwardly from theirforemost edges.

Each of the slides H is fitted,"central1y between the top and bottomthereof and adjacent the laterally outermost edge, with a frictionlocking device, indicated generally "at 2!, and which device isdescribed in detail, with "respect to its structure and. function, inthe aforesaid copending application.

When .the above described ventilator screen is in use, it is engagedin-a window frame, indi- .cated generally at 22, in the manner shown inFigs. 3 and 4; the device resting at its lower edge on the sill 23,, andthe slides ll being adjusted laterally outward untilthe shoulders l9 andlocator lips matchingly engage from the front with the adjacent partingbeads 24 of said window frame. The-locking devices 2| are then disposedin the adjacent sash channels 25, and are manipulated to engage againsta forward stop 26 whereby to forcefully but releasably secure theventilator screen inplace.

When the ventilator screen is in use in a window frame, as above,-thelower sash 21 is partially open, with its bottom cross bar 28 somedistance above the sill 23, but not above the top rail 2 of the device.This permits'of ventilation through-the screen section 1, yet the deviceis fly and insect proof by-reason of the fact that there issubstantially complete closure with the sill 23, bottom cross bar 28 ofthe lower sash 21, and the parting beads 24. 'It should also be notedthat the adjacent portion of the lower sash 21 runs in close face toface relation to the fiat end posts e; the upper ends or tips '6 of saidend posts being out-turned, as shown, to assure against said ends ortips undesirably biting into the sash 27 asthe latter is moved up ordown.

The described adjustable ventilator screen is r formed, in the frameparts thereof, wholly of sheet metal-preferably of an aluminum alloy,thus being weather-proof and rust-resistant. Consequently, theventilator screen may remain in place in awindow frame forextendedperiod of'time without deterioration; the design being such that when inplace the ventilator screen does not obstruct normal opening and closingof "the sash 21.

From the foregoing description it will be readily seen that? there hasbeen produced. such a 'device as'sub stantially fulfills the objects ofthe invention, as' set .forth herein.

While this specification sets forth in detail the vpresentand preferredconstruction of the device, still inpractice such deviations from suchdetail -may"be resorted to as do not form a departure I from thespiritof the invention, as defined by the appended claims. 2

Having thus described the invention, the follow'ing is claimed as newand useful, and upon which Letters Patent are desired:

11. An adjustable ventilator screen comprising a sheet metal borderframehavingtopand bottom rails. and strap like end posts secured againstthe front face of the rails, said railsand posts defining a rectangularo.pening','the ,rails along their opening-forming edges being providedwith longitudinalchannels facing-away from-the opening and offset backfrom the posts-Ia rectangular screen .panel behind and overlapping theposts with its top .and; bottom portions clamped in said channel's,upstanding sheet metal slides at theopposite ends of the border frameback of the,..same, the top and bottom portions of-said slides beingbentto follow the upper'and lower edges of the upper and lower channelsrespectively and to then bear againstthe back of the rails above. andbelow-the top and bottom channels to adjacent the top and bottom edgesof said top and bottom rails, and guide channels formed along such edgesof the railsin which the corresponding edge portions of the slides age.i I.

2. Ascreen'as inclaim Linwhich the laterally inner edges ofthe-slideabetween the upperi'and lower channels are deflected toadjacent the screen,. while the laterally outer edges of. the

posts, between the upper and lower channels are formed with rearwardlyprojecting flanges "extending to adjacent the slides.

DAVID JORDAN Rus'r." JACK n. 'JENSE-NJ- REFERENCES CITED The followingreferences are of recordin the ,file of this patent:

UNITED" STATES PATENTS f,

Date

-.Allen, Dec. 29,1931

